You can pick up the Lisboa Card in one of the tourist information offices located at:
Lisbon Airport – Arrival Hall: Alameda das Comunidades Portuguesas, 1700-111 Lisboa, 7-24h
Palácio Foz (Praça dos Restauradores): Calçada da Glória nº9, 1250-112 Lisboa, 9-20h
Lisboa Welcome Center (Praça do Comércio): Rua do Arsenal nº 21, 1100-038 Lisboa, 9-20h
Don´t forget to bring the voucher you received via email and a valid ID.